Collapsible receptacle for cylinder boring and honing operations



I 1841- 1939- n. w; FREBORG ET AL 2,143,912

GOLLAPSIBLE RECEPTACLE FQR CYLINDER BORING AND HONING OPERATIONS Filed Feb. 2, 1938 2 Sheets-Sheet 1 D. w. FREBORG ETYAIL 2,143,912

Filed Feb. 2, 1958 2 Sheets-Sheet 2 COLLAPSIBLE RECEPTACLE FOR CYLINDER BORING AND HONING OPERATIQNS ill Patented Jan. 17, 1939 UNITED STATES PATENT OFFHCE David W. Freborg and Stanley H. Freborg, Kankakee, 111., assignors 'Freborg, Chicago, Ill.

of one-fifth to Carl G.

Application February 2, 1938, Serial No. 188,304

6 Claims.-

The invention relates to improvements in collapsible receptacles for use in cylinder boring and honing operations and has more particular reference to improved means of the receptacle type for collecting and retaining the waste metal, abrasive dust and other foreign particles pro duced in boring and honing operations on automobile cylinders.

Before regrinding automobile cylinders the best garage practice required the provision of some means for collecting the waste metal, grindings and abrasive dust which is always produced by said regrinding operation. Heretofore a cup or other similar object has been inserted within the crank case from underneath the engine and located as accurately as possible below the cylinder to be reground. To properly locate the cup below the cylinder and remove the same from the crank case after the boring operation required considerable time and further, the procedure was an unpleasant one in that all activity in placing and in removing the cup took place under the car. In the event the crank case is not completely protected from the boring operation dust and fine abrasive particles will be deposited on the walls of the crank case and also on the crank shaft. The danger in these foreign particles is that they will find their way into the bearings with consequent serious damage. As a necessary precaution the interior of the crank case has to be thoroughly washed following the completion of the regrinding operations.

The primary object of the invention is to provide improved means for use in cylinder boring and honing operations which will eliminate the objections above mentioned.

Another object resides in the provision of a novel collapsible receptacle which when properly inserted in place under the cylinder will completely seal the crank case against the entrance of dust and other foreign particles produced by regrinding of the cylinder.

A further object is to provide means of the receptacle type for the purposes described which will not require the mechanic to work under the car in placing or removing the receptacle. On the contrary, an important feature of the present apparatus is the fact that the receptacle can be accurately located in place and easily removed with all activity for accomplishing these operations taking place above the engine.

Another object resides in the provision of a novel collapsible receptacle of simple construction and which can be easily collapsed or released by manually actuated means.

A further object is to provide a collapsible receptacle having in combination therewith an adjustable support for supporting the same vertically and for accurately positioning the same below the cylinder to be reground.

With these and various other objects in view, the invention may consist of certain novel features of construction and operation, as will be more fully described and particularly pointed out in the specification, drawings and claims appended hereto.

in the drawings which illustrate an embodiment of the invention and wherein like reference characters are used to designate like parts Figure 1 is a view in elevation of the receptacle and support of the invention shown in proper relation with the cylinder of an automobile engine.

Figure 2 is a View in elevation showing the receptacle collapsed and also illustrating the tool for placing and removing the receptacle;

Figure 3 is an enlarged sectional view showing the construction of the receptacle and its association with the support;

figure 4- is a view similar to Figure 3 but illustrating the action of the tool in collapsing the receptacle;

Figure 5 is a fragmentary perspective view showing the manner of attaching the cloth bag comprising the receptacle to the collapsible arms;

Figure 6 is a top plan View illustrating the construction and arrangement of the collapsible arms;

Figure 7 is a bottom plan view of the structure shown in Figure 6; and

Figure 8 is a fragmentary detail view showing a modified construction of collapsible arm.

Referring more particularly to the drawings, Figure 1, the invention is illustrated in connection with the cylinder it) of the engine block II. It is essential during the regrinding of a cylinder such as illustrated to provide some means for collecting the metal particles and abrasive dust produced as a result of the coring operation on the cylinder. The invention provides, as shown in Figure l, a collapsible receptacle !2 having associated therewith an upright standard l3 which is adjustable by reason of the rod M which telescopes within said standard and may be held in proper position by the thumb screw I5. Figure 2 shows the receptacle i2 collapsed so that the same may be removed and which is accomplished from above the engine by the handle (6 and the tool l'i having telescoping relation therewith and which is therefore slidable in a direction axially of the handle l6. For purposes which will be presently explained in more detail, the tool H is provided at its lower end with a downwardly directed cup l3.

Referring more particularly to Figures 3 and 4, the collapsible receptacle of the invention consists of a cloth bag 20 which is suitably tied at its lower end, as at 2!, to the standard l3 and which is formed at its upper end with an inward fold providing an overlap which is stitched vertically, as shown in Figure 5, at 22, forming a series of pockets for the reception of the upright portions of the arms 23. Said arms are formed from any suitable metal having said upright por tion as described and being provided at their opposite ends with a hook 24. Said collapsible receptacle consists of a plurality of arms 23 radially arranged, as shown in Figures 6 and '7, and which are pivotally secured to the base 25 as at 26. The circular coil spring 2'! resiliently joins the inwardly directed end of the arms so that the arms are yieldingly maintained in contact with their respective stops 28, which are bent from the metal of the base 25. The circular coil spring is received within the hook 24 of each arm. When the arms are yieldingly maintained against their respective stops 23 the outer portion thereof is positioned vertically, as shown in Figure 3. In order to cause the arms to. pivot in a direction to collapse the receptacle, as shown in Figure 4. the handle I6 is first releasably attached to the nose portion 30, projecting upwardly from the base 25. This is accomplished by means of the pins 3i, which project from said nose portion, and by means of the bayonet slots formed in the end of handle IS, the said bayonet slots receiving said pins in a well known manner which need not be further described in detail. The next operation is to move the tool ll downwardly or in any event, to cause relative movement to take place between handle I6 and the tool I! so as to force the cup l8 into contact with the inwardly directed ends of the arms 23. The arms are therefore caused to pivot on the base 25 and when the cup has seated itself upon said base the receptacle will be fully collapsed, as best illustrated in Figure 4.

The base 25, which is perforated as a result of the openings 32, has suitably secured thereto the vertically depending rod 33. A pin 34 extends from said rod and positions on said rod a metal ferrule 35 having a bayonet slot 36. Located on the rod 33 and confined between the base 25 and said ferrule is a coil spring 37. By means of the rod 33 and said ferrule the receptacle may be releasably attached to the upright IS, the said upright having a pin 38 in its upper end which is adapted to be received in the bayonet slot 35. The upper end of the upright is also slotted as at 9 to accommodate the pin 36 and as a result of the structure described it will be observed that the receptacle, including the base and the rod 33, are supported by the upright in a manner permitting axial movement thereof with respect to the upright. However, the spring 31 yieldingly forces the base and the rod 33 in an upward direction and thus maintains the receptacle properly positioned with respect to the upper end of the upright.

The manner of mounting the receptacle on the upright i3 is of vital importance since it is necessary that the receptacle be held in proper position during the boring operations on the cylinder. This function is accomplished as a result of the resilient tension exerted by spring 31 on the base of the receptacle and the relative movement permitted between the base and the upright l3 allows the receptacle to be opened below the engine block so that the fingers will be free to move to their fully extended position where their upper portion will be vertical. The operator thereupon releases pressure on the base of the receptacle exerted thereon through the handle l6, thereby allowing the receptacle to move upwardly under the tension of spring 31 and into contact with that portion of the cylinder block immediately adjacent the cylinder opening. The handle I6 is thereupon detached from the base 25 and removed through the cylinder. The receptacle will be positioned as shown in Figure 1 and boring of the cylinder may take place. Following the completion of the boring operations the receptacle is removed by operations the reverse of those described above. The upright I 3 was described as adjustable by reason of the telescoping rod I4. This is necessary in order to accommodate the upright to different makes of cars wherein the engine block will be at different heights from. the floor level.

In the modification shown in Figure 8 the arms 23 are formed with a depending portion 42 which may comprise a cut-out from said arms or which may be a separate piece welded to the arm. In this modification the portion 42 comprises a stop as a result of its engagement with the cylindrical portion of the base 25 to thereby limit outward movement of the arm.

The collapsible receptacle in combination with the vertically adjustable standard has particular application to cylinder boring and honing operations and when properly inserted in place below the cylinder the receptacle will completely seal the crank case against the entrance of dust and other foreign particles which are produced during the regrinding of the cylinder. The present apparatus does not require the mechanic to work under the car in placing or removing the receptacle but on the other hand, an important feature of the invention is the fact that all opertions for opening the receptacle and collapsing the same can be accomplished above the engine through the instrumentality of the handle and tool.

The base of the receptacle is perforated by the openings 32 which are arranged and of the proper size so as not to weaken the base and yet render it possible for the grindings and other foreign metal particles from the boring operation to pass through into the cloth bag of the receptacle. This bag may be tied or otherwise secured to the standard, preferably below the shoulder 43. After the receptacle has been removed from the cylinder the bottom of the cloth bag can be easily opened and the particles retained thereby discharged so that the receptacle is comparatively clean for the next operation.

The invention is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings, as various other forms of the device will of course be apparent to those skilled in the art without de parting from the spirit of the invention or the scope of the claims.

What is claimed is:

1. A waste receiver for cylinder boring and honing operations comprising, in combination, a collapsible receptacle including a base, a plurality of radial arms pivotally secured to said base, each of said radial arms having an upwardly bent outer end, resilient means engaging the inwardly directed ends of said arms to yieldingly maintain the upwardly bent outer ends thereof substantially vertical, a cloth bag having attachment to the upwardly bent outer ends of said arms and depending below the base, a vertically adjustable standard for supporting said collapsible receptacle, means having detachable association with the upper side of said base providing a handle whereby the receptacle and standard may be bodily moved as a unit, and a member slidably mounted on said means having operation to collapse said receptacle by causing downward movement of the inwardly directed ends of said arms against the tension of the resilient means.

2. A waste receiver for cylinder boring and honing operations comprising ,in combination, a collapsible receptacle including a base having an upstanding peripheral flange, a plurality of radial arms pivotally supported by said upstanding flange of the base, each of said arms having an upwardly bent outer end, resilient means engaging the inwardly directed ends of said arms to yieldingly position the upwardly bent outer ends thereof substantially vertical, fabric retaining means having releasable attachment to the upwardly bent ends of said arms, a vertical standard for said receptacle, means yieldingly mounting the base of said receptacle on the standard permitting limited movement of the receptacle with respect to said standard in an axial direction, and other means adapted to have detachable association with said base for collapsing the receptacle.

3. A waste receiver for cylinder boring and honing operations comprising, in combination, a collapsible'receptacle including a circular base, a plurality of radial arms pivotally supported by said base, each of said arms having an upwardly bent outer end, resilient means engaging the inwardly directed ends of said arms to yieldingly maintain each arm in contact with a stop thereby positioning the upwardly bent end of each arm substantially vertical, and a cloth bag having attachment to the upwardly bent ends of said arms and depending below the base, said receptacle being collapsed by means causing movement of the inwardly directed ends of the arms against the tension of the resilient means whereby said arms are caused to move away from their respective stops.

4. A waste receiver for cylinder boring and honing operations comprising, in combination, a collapsible receptacle including a perforated base of substantially cup-shape having an upwardly directed rim, a plurality of radial arms pivotally secured to the rim of said base, each of said arms having an upwardly bent outer end, resilient means engaging the inwardly directed ends of said arms to yieldingly maintain each arm against a stop whereby the upwardly bent end thereof will be positioned substantially vertical, and fabric retaining means having attachment to the upwardly bent ends of said arms and depending below said base.

5. A waste receiver for cylinder boring and honing operations comprising, in combination, a collapsible receptacle including a perforated base of substantially cup-shape having an upwardly directed rim, a plurality of radial arms pivotally supported by the rim of said base, each of said arms having an upwardly bent outer end, resilient means engaging the inwardly directed ends of said arms to yieldingly maintain each arm against a stop whereby the upwardly bent ends thereof will be positioned substantially vertical, fabric retaining means having attachment to the upwardly bent ends of said arms and depending below said base, and means having detachable securement to said base for collapsing said receptacle.

6. A waste receiver for use in cylinder boring and honing operations comprising, in combination, a collapsible receptacle including a base, a

plurality of radially disposed arms pivotally se-.

cured to said base, each of said arms having an upwardly bent outer end, a stop provided by said base for each arm whereby the upwardly bent ends thereof are positioned substantially vertical when the arms are in contact with their stops, resilient means engaging the inwardly directed ends of said arms to yieldingly maintain the arms against their stops, fabric retaining means having releasable attachment to the upwardly bent ends of said arms and depending below said base, a vertical standard for said re- A ceptacle, and means having detachable connection with said base for collapsing the receptacle.

DAVID W. FREBORG. STANLEY H. FREBORG. 

